Light heavyweight Andrzej Fonfara (18-2, 9 KOs) scored a massive sixth-round knockout over Anthony Russell (16-3-1, 5 KOs) in the main event of Windy City Fight Night 17 at the UIC Pavilion in Chicago. With the victory, Fonfara won the vacant WBO NABO title in front of a large crowd of Polish fans including former heavyweight contender Andrew Golota.